76849409 has 8 divisors (see below), whose sum is σ = 94584000. Its totient is φ = 60803856.

The previous prime is 76849397. The next prime is 76849411. The reversal of 76849409 is 90494867.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 76849409 - 2⁴ = 76849393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (76849429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 422159 + ... + 422340.

It is an arithmetic number, because the mean of its divisors is an integer number (11823000).

Almost surely, 2^76849409 is an apocalyptic number.

It is an amenable number.

76849409 is a deficient number, since it is larger than the sum of its proper divisors (17734591).

76849409 is a wasteful number, since it uses less digits than its factorization.

76849409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 844519.

The product of its (nonzero) digits is 435456, while the sum is 47.

The square root of 76849409 is about 8766.3794693134. The cubic root of 76849409 is about 425.1545624676.

The spelling of 76849409 in words is "seventy-six million, eight hundred forty-nine thousand, four hundred nine".